Blind stitch sewing machine for binding carpets



April 2L 1942 L.. G. BowMAN BLIND STITCH SEWING MACHINE FOR BINDING CARPETS Filed April 3, 1940 '7 Sheets-Sheet l l April 2l, 1942. .-G. BOWMAN t 2,280,468

` BLIND STITCH SEWINGI MACHINE FOR BINDING CARPETS Filed April 3, 1940 '7 Sheets-Shet 2 Lau/'s C-. Bowman @Lt fSmL,"

April 21, 1942. G, BWMAN 2,280,468

BLIND STITCH SEWING MACHINE POR BINDING CARPETS Filed April 3, 1940 7 Sheets-Sheet 3 Syvum l.. G. BOWMAN April 2l, 1942.

BLIND STITCH SEWING MACHINE FOR BINDING CAHPETS Filed April 3, 1940 n 7 Sheets-Sheet 4 ..-III iklllfsfli l Il -ll i I l 1 Il-.

j v Vac WIM Lou/'S G. Bowman f A April 21, 1942. A, L, G, BOWM'AN 2,280,468

BLlND STITCH SEWING MACHINE FOR BINDING CARPETS Filed April 3, 1940 7 Sheets-Sheet 5 1a1 1&4J 115 Z1 l 114d 56 -lzl 112 Lou/'.5 Bowman @27g-fs, www

L. G. BOWMAN `April 2l, 1942.

` BLIND STITCH s EwING MACHINE FOR BINDING CARPETS Filed April s', L1940 7 sheetsfsheet e April 21, 1942. L. G. BOWMAN 2,280,458

BLIND STITCH SEWING MACHlNE FOR BINDING CRPETS Filed April 3. 1940 K 7 Sheets-Sheet '7 Lou /S owmam,

Patented Apr. 21, 1942 UN ETES rssy BLIND S'IITOH SEWING MACHINE FOR BINDING CARPETS Application April 3, 1940, Serial No. 327,714

59 Claims. (C1. 112-178) This invention relates to new and useful improvements in sewing machines generally, a1- though more particularly to blind stitch sewing machines for hemming carpets, or similar heavy woven bodies.

Heretofore, a binding has been stitched to the edges of a carpet by two operations on vertical needle machines. The rst operation consisted in positioning the binding over the edge of the carpet at the pile side thereof and joining the outer-edge of the binding to the edge of the carpet by a line of overedge stitches. The carpet was then turned over, i. e., with the pile underneath, after first turning the binding over the edge of the carpet so as to hide the overedge stitches, and the free edge of the binding was secured to the carpet base by a line of stitches formed by a vertical needle machine. This second line of stitches is objectionable because the stitches on the pile side of the carpet tie down the pile and cause a line or furrow .to appear in said pile. l

One of the principal objects of this invention is to provide a blind stitch machine for performing the second operation above noted, whereby the free edge of the previously seamed binding can be joined to the carpet base by a line of blind stitches which do not pass through the carpet basefand tie down the pile and which thus avoid the forming of the objectionable line or furrow in the pile.

Another objectl of the invention is to provide a blind stitch machine of the lock stitch type for joining the free edge of the binding to the base whereby the line of stitches will not be subjected to raveling.

A further object of the invention is to provide means for forcing and holding the binding tightly over the edge of the carpet immediately in ad- Vance of the sewing operation whereby the binding, when securely sewed in place, will be laid tightly over said edge.

Another object of the invention is to provide an intermittent top feed including a feed wheel for feeding the carpet and binding from the binding guide to the needle, and to adjustably mount said feed wheel on the stitching head whereby it may be set at a slight angle to the direction of feed and thereby effect a crowding of the carpet into the binding.

Another object of the invention is to provide a novel top feed of the character stated embodying two feed wheels, one for feeding the carpet toward the needle and disposed for engagement with the carpet base at oneside of the stitch line,

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and the other for feeding the carpet from the needle and disposed for engagement with the tightly laid and blind stitchsecured binding at the other side of said stitch line. f Anotherobject of the invention is to provide a novel presser foot assembly structure which cooperates with and underlies the top feed and which is depressible so as to facilitate insertion and withdrawal of carpet into and from themachine.

Another object of the invention is to provide a novel presser foot assembly structure of the character stated which includes a carpet supporting roller lying directly beneath and opposed to each feed wheel.

Another object of the invention is toprovide a novel presser foot assembly structure of the characterstatedin which is included a carpet supporting andguiding plate disposed betweenthe upwardly in Another object of the invention is to provide 'l novel meansfor adjustably mounting the ridge forming element so that the upper limit of movement thereof can be altered rapidly and through a wide range to thereby vary the depth of needle penetration in the carpet base and greatly facilitate eiiicient use of the machine in the binding of carpets of varied thicknesses. l i.

Another object of the invention is toA provide a' machine of the character stated in which there are included a pair of laterally spaced carpet supporting rollers disposed in rear of the yridge forming element and with the space between the rollers aligned with said element, and an ironer disk or roller disposed for engagement with the uppermost face ofthe carpet directly over said space so asto be effective to depress or iron out the ridge formed by the engagement of the ridge forming element with the carpet.

A still further object of the invention lies in the provision of means for releasing automatically the needle thread tension upon depression of the 'presser foot whereby the seamed carpet may be readily removed from the machine.

With these and other objects in View which Will more fully appear, the nature of the inventionl will be more clearly understood by following the description, the appended claims, and the several views illustrated in the accompanying drawings.

In the drawings:

Figure 1 is a front elevationof a blind stitch sewing machine constructed in accordance with my invention.

Figure 2 is a left hand elevation thereof, the work support being shown in vertical cross section.

Figure 3 is a bottom plan view o'f the machine, parts being broken away and in section.

Figure 4 is a horizontal section taken on vthe line 4--4 on Figure 1, the rotary hook being omitted.

Figure 5 is an enlarged vertical section taken on the line 5-5 on Figure 1.

Figure 6 is an enlarged plan- View and part horizontal section showing particularly the relation between the carpet, the binding, the ridgereceiving plate, the needle, thel rotary feed, and the binding guide, the rotary hook being omitted.

Figure 7 is a detail horizontal section taken on the line I-'Ion Figure 1.

Figure 8 is a vertical section taken on the line 8-8 on Figure 7.

Figure 9 is a vertical section taken on the line 9-'9 on Figure 8.

Figure 10 is a fragmentary vertical cross sectional view taken on the line ure 4.

Figure 11 -is a View showing the carpet guide and binding laying parts in separated perspective.

Figure 12 is a detail perspective view of the bracket which supports the adjustably mounted top feed shaft.

Figure 13 is a sectional viewshowing more or less diagrammatically a carpet having a binding seamed thereto by the first operation hereinabove referred to. p

Figure 14 is a similar view but showing the binding seamed to the carpet by the second operation which is performed on the machine herein disclosed.

Figure 15 is a bottom plan View of the carpet and showing particularly the line of blind stitches which secures the free edge of the binding to the base of the carpet.

Figure 16 is a detail longitudinal section showing the mounting of the needle thread tensioning means.

Figure 17 is a fragmentary horizontal sectional view illustrating the co-relation of the ridge forming element and the presser foot assembly structure.

Figure 18 is a detail vertical cross section taken on the line I8-I8 on Figure 3.

Figure 19 is a detail vertical cross section taken on the line IS-IB on Figure 4.

Figure 20 is a bottom plan View of a fragment of carpet having the free edge of its binding secured by blind stitching other than the overedge type disclosed in Figure 15.

Like reference numerals designate corresponding parts throughout the several gures of the drawings.

In stitching a binding t0 a carpet, two separate operations are employed. The first operation, as shown in Fig. 1.3, consists in superposing thebinding A upon the upper face or pile 5 of the carpet B and along the edge thereof, and joining thebinding to the base E of the carpet by a line of through stitches C made on a vertical needle machine, such as a zig-zag or overedge Iil--IO on Figtype. The second operation, as shown in Fig. 14, consists in turning the carpet over and folding the binding around the edge thereof and upon the base of the carpet and then joining the free edge of the binding to said base by a line of stitches D formed on a blind stitch machine embodying my invention. Thus, the line of stitches C will be completely hidden. The stitches D are ill) preferably of the lock stitch type, and, as shown in Fig. 15, include a needle thread d and a bobbin thread d. The needle thread between adjacent loops e is bowed laterally over the adjacent edge of the binding as at f and is secured against the carpet base B as at g beneath the bobbin thread d', loops h of said bobbin thread being concatenated with and drawn into the body of the carpet base E by the needle loops e. The edge of binding is thus held in fiat and firm relation against the base 6 of the carpet.

The blind stitch sewing machine which is employed in the second operation and which embodies my invention, includes a main frame E containing a hollow base "I, a hollow standard 8, and a hollow arm 9 which projects from the upper end of the standard and overhangs the base and terminates in a downwardly projecting arm I0.

Attached to the arm I0 is a stitching head F which is U-shaped in horizontal cross section to form resultant side walls II, I2 and a connecting wall I3. See Figures 1, 4 and 6 of the drawings. The head is set at an angle of approximately to the longitudinal axis of the frame arm 9, and opens toward the front of the machine and toward the standard 8 thereof.

Rigidly attached to the lower end of the connecting wall I3 of the head F and extending forwardly thereof, is a horizontally disposed ridgereceiving plate I4 having an elongated opening I5 therein through which a ridge of carpet B and superposed binding A is intermittently projected, the longitudinal axis of the opening being disposed in a plane at .right angles to the longitudinal axis of the frame arm 9. The plate I4 is located beyond the left hand end of the base I as shown in Figs. 4 and 6, and in a horizontal plane spaced considerably above the top surface of the base as shown in Figs. 1 and 2.v At its front end thev plate I4 removably supports a forwardly extending, vertically disposed guide member I6 the advance, upturned end of which serves the twofold purpose of lining up the edge of the binding A and of guiding the carpet and the binding under said plate.

J ournaled in the frame arm 9 and in the upper end of the standard 8, is a main shaft I'I having a driving pulley I8 fixed to its right hand end.

The lock stitch forming mechanism which is mounted in the head F is substantially shown in the patent to Whitelaw 1,176,415, Mar. 2l, 1916. This stitching mechanismv comprises generally, a reciprocatory curved needle I9, a rotary hook 20 containing a supply of bobbin thread d', a pair of loopers 2|, 22, and a take-up lever 23 for the needle thread d, these elements being all driven from a horizontal jack shaft 24 which is journaled in the head F and is coupled to the main shaft I1 by a l-to-l gear coupling.

The needle I9 is centrally carried by a yokeshaped needle arm 25 which is journaled in the side walls II, I2 of the stitching head and above the plate I4 to oscillate about a horizontal axis disposed in a plane diagonal to the longitudinal axis of the main shaft I1 whereby the path of movement of the needle will extend diagonally across the opening I of said plate, the penetrating stroke of the needle being from right to left. The needle arm 25 is oscillated from the jack shaft 24 by driving connections indicated as a whole by the numeral 26 whereby the needle will receive one complete oscillation for each rotation of said jack shaft.

The cooperating hook 29 is rotated from the jack shaft 24 by driving connections indicated as a whole by the numeral 21 whereby the hook will be rotated twice for each rotation of the jack shaft.

The two loopers 2|, 22 engage the needle thread d which extends from the eye of the needle to the last formed needle loop when the needle is at the beginning of its penetrating stroke, and spread said thread laterally over the edge of the binding and into position for entrance by the needle after which the hook will engage the needle loop of the needle andcarry said loop around the supply of bcbbin thread d' contained within said hook. Thus the needle thread will be spread around the bight of the needle loop, and the bobbin thread which passes through the bight and above the spread portion of the needle thread, will form a lock therefor.

The take-up lever 23 is driven from the needle driving means 23 by driving connections indicated as a whole by the numeral 28 whereby the needle loop just formed will be partially set and the next to last stitch will be set.

Journ-aled in the`base 1 of the main frame E adjacent the front wall thereof is a horizontal rock-shaft 29 whose longitudinal axis is in parallelism with the main shaft I1. The left end of the rock shaft 29 projects beyond the left end of the base, and fixed thereon is an upwardly and `rearwardly extending rock arm 30. The arm 3D includes a rearwardly extending supporting lug 3| and carries a freely rotatable carpet sup` porting roller 32, and these elements comprise parts of a presser foot assembly structure soon to be described in greater detail.

The right hand end of the rock shaft 29 projects beneath the lower end of the standard 8 of the m-ain frame and fixedly secured thereon is a rock arm 33 and a stop arm 34. Located Within the standard 8 is a coil spring 35 having its lower end connected to the rock arm 33 and its upper end connected to a hook 36 which is threadably engaged in a sleeve 31 freely rotatablev in an opening formed in the upper portion of the standard and held against downward movement by a head 3S which contacts the standard. The

sleeve 31 may be rotated to adjust the hook 33 g vertically whenever it is desired to vary the tension of the spring. Threadably mounted in the stop arm 34 is a stop pin 39 which engages the under face of the base stop 40 to variably limit Y upward movement of the arm 33 under the urge of the spring 35. It will be noted that the supporting roller 32 is located in front of the ridge receiving-plate i4 and on the left of the opening I5 therein, and that said roller is centered in a horizontal pla-ne located below and in spaced relation to said plate.

The presser foot assembly structure also includes a pair of carpet supporting rollers 4| disposed in laterally spaced relation in rear of the plate opening I5 and with the space 42 intervening said rollers aligned withthe longitudinal cen ter of said opening. The rollers 4I are mounted for free rotation about a common axis as at43 on a rock arm` 44 rockably mounted as at 45 on the base 1. The rock arms 33 and 44 are downwardly in unison, and a carpet guiding or bridge plate 41 pivotally mounted at 48 for swinging movement about the common axis of the rollers 4I has its front or free end slidably supported on the lug 3| projecting rearwardly from the arm 39. This plate 41 also forms a part "ers.

of the presser foot assembly structure, and it will be noted that it inclines upwardly from its front end toward the rollers 4| so as to facilitate guiding of the infeeding end of a carpet to said roll- A ridge forming element accommodating opening 49 is formed in the plate 41 directly beneath the opening I5 formed in the ridge-receiving plate I4.

Manually operable means are provided fordepressing the presser foot assembly structure, and to this end a horizontal rock shaft 59 is journaled in the base 1 of the main frame on the right of the rock shaft 29 and is disposed in a planev 52 which overlies the stop arm 34, and conse' quently upon movement of the knee-press lever to the right the rock shaft 29 will be rocked andf the presser foot assembly structureincluding the rollers 32 and 4I and the plate 41 will be depressed against the tension of the spring 35, and upon release of the knee-press lever, the spring will return the parts to their normal positions determined by the adjustable stop 39.

Supported on the stitching head F and located directly above the supporting roller 32 is an intermittently rotatable and relatively wide feed wheel 53 having a plurality of circumferential series of teeth 54. This feed wheel is fixed to the right hand end of a horizontal shaft 55 which is journaled in a bracket 53 attached to the side wall II of the stitching head by screws 51. the presser foot assembly structure can be retained normally below and in spaced relation to the feed wheel 53. This is important as it prevents the feed wheel 53 from grinding against the supporting roller 32 of the presserfoot assembly structure whenever the machine is operated without any work therein.

The shaft 55 is located below the stitching head and has its longitudinal axis normally located in a plane parallel with the main shaft I1. It will be noted that the feed wheel 53 is located at the left of the opening I5 of the ridge-receiving plate I 4 but in advance thereof. Thus the carpet B and binding A are adapted to be fed rearwardly from the presser foot and thence under the said plate I4, the direction of feed being at right angles to the longitudinal axis of the main shaft. It may be desirable to direct the carpet slightly toward the right during the feeding thereof whereby the edge of the carpet will be crowded into the binding. For this purpose, al pair of upper and lower set'screws 53, 59 are adjustably threaded through the bracket 53 for contact with the side wall |I` of the head F whereby said bracket and consequently the shaft 55 may. be adjustably secured at a predetermined angle to the direction of feed thereby to force the carpet slightly toward the right during the 'feed travel thereof. See Figs. 4 and 6.

It will be obvious that by loosening the bracket mounting screws 51 and adjusting the set screws 58 and 53 to cause lthem to project a greateror link-connected as at 46 to move upwardly ori By means of the adjustable stop screw 33,'

lesser amount beyond the bracket 55 for engagement with the side wall I I of the head F, and then again tightening said screws 51, the desired angular relation of the opposing faces of the bracket 56 and said wall I-I, and consequently thev angular relation of the shaft 55, can be attained.

In order to rotate the feed shaft 55v intermittently, a ratchet wheel 55 is fixed to the shaft 55 adjacent the left hand end thereof. A rearwardly extending feed lever I is provided and comprises spaced plates 62, 62 'which are journaled on the end of said shaft, and a connecting web 53, the latter being locatedalcng the top and toward the rear end of the lever. Below the web 63 the plates are provided with longitudinally extending slots 54, 64. A horizontal pivot shaft 65 extends across the slots 54 and is clamped in any adjusted position along said slots through the medium of a surrounding sleeve 65 and a clamping nut 81, the latter being on the left hand end of the shaft to insure immediate access thereto. A rod 68 is pivotally connected at its upper end with an eccentric 59 fixed to the left hand end of the main shaft I1 and at its. lower end to the right hand end of the pivot shaft 65. A feed pawl 19 is disposed between the plates 52, S2 of the feed lever 6I, and is fulcrumed on a transverse pivot pin 1I mounted insaid plates. The pawl includes a forwardly extending nose 12 which overlies the ratchet wheel 50, and a rearwardly extending tail 13 which overlies the web 63 of the feed lever 6|. A coil spring 14 is positioned between said web and tail and functions to retain the nose of the pawl in yieldable engagement with the teeth of the ratchet wheel. back dog 15 which is pivoted on a horizontal pin 16 mounted on the bracket 55 above the ratchet wheel, includes a downwardly projecting nose 11 and an upwardly extending tail 18 located in front of the bracket. A coil spring 19 is positioned between the tail and the bracket 56 and functions to retain the nose 11 in yieldable engagement with the teeth of the ratchet wheel.

vThus the feed lever 6I is oscillated by the eccentric 69, and upon successive upward move- I.

ments of the lever the feed pawl will impart step feed movements to the ratchet wheel 6U in a clockwise direction as viewed in Figs. 2 and 8, whereby the feed wheel 53 will be given an intermittent rotary movement in the same direction as the ratchet wheel, and the back dog will prevent the ratchet wheel and the feed wheel from rotating in a reverse direction. The eccentric 69 is timed with the needle reciprocations whereby the feed wheel will begin each feeding movement immediately following the withdrawal of the needle from the carpet and its binding. By adjusting the pivot shaft 65 in one direction or the other along the slotway in the feed lever 6I, the travel of the feed pawl 10 will be increased or decreased and consequently the feeding movement of the feed wheel will be increased or decreased.

As has been previously stated, the feed wheel 53 is disposed to the left of the ridge-receiving plate opening I5 and directly over the carpet supporting roller 32, and since the binding A extends over the carpet base 5 or to the left only as far asthe guide member I6, it will be obvious that this feed wheel engages only the base of the carpet and not the binding. Also, because of its angular position in advance of the position of needle penetration, the feed wheel 53 feeds the carpet toward the needle and crowds it slightly toward the right or into the binding edge and flatly against the carpet base.

fold. A second intermittent feed Wheel of like construction is provided and positioned in rearof the plate opening I5 where it will engage the binding after it has been stitch-'secured firmly See Figs. 1, 4 and 6. This second feed wheel, designated 89, is disposed directly over the right hand one of the carpet supporting rollers 4I and is secured upon a shaft 8| rotatable about a horizontal axis in a bearing 82 rigidly secured to and depending from the stitching head side wall I2. The shaft 9| also carries a ratchet wheel 83 which is actuated intermittently by a ratchet lever equipment identical with the one previously described and illustrated in Figs. '1, 8 and 9. This second ratchet lever equipment is oscillated by pitman rod and eccentric connections with the main shaft I1 and generally designated 85. The ratchet lever equipments are adjusted so that the feedY wheels 53 and Bilmcve simultaneously and in like degree.

At its left hand end and closely adjacent the feed wheel 80, the shaft 8| carries an ironer disk 86. It will be observed by reference to Figures 4, 6 and 19 that the disk 85 is disposed directly over the space 42 intervening the rear carpet supporting rollers 4| and is of sufficient diameter to engage and depress the binding and carpet slightly into said space thereby ironing out any furrow or indentation which might be formed in the carpet by projection of the ridge or node thereof upwardly in the receiving opening I5 in position to be penetrated by the oscillating needle I9.

In order to intermittently project the node or ridge of the carpet B and binding A into needle penetrating position, I have provided a vertically movable ridge forming element 81. A horizontal bearing shaft 88 is supported as at 89 formovement about its axis in the baseA 1 of the main frame adjacent the rear Wall thereof. The longitudinal axis of this shaft is in parallelism with the rock shaft 29. The bearing shaft 88 carries an elongated eccentric 9D, and journaled on the eccentric 99 is a rocking frame which comprises a sleeve 9| surrounding the eccentric 90 and two forwardly extending rock arms 92, 93 which are integral with the sleeve. i

The arm 92 is relatively long and disposed within the base and includes an end portion 94 which projects laterally toward the left through an opening 95 formed in the left end wall of the base and terminates below and yin substantial registry with the opening I5 of the ridgereceiving plate I4. The end portion 94 of the arm 92 is provided with a longitudinally extending bore 96 for receiving the ridge forming element supporting shank or bearing pin 91 whose longitudinal axis is in parallelism with the bearing'shaft 88. Set screws 98 are threadably mounted in said arm end 94 for engaging the shank 91 to thereby retain the same against movement. The ridge forming element 81 is carried by the member 91 and, as shown in the accompanying drawings, this element consists of a thin flat finger which is rigidly connected at its base to said member. It will be noted that the element 81 is provided with a needle clearing notch |00 at its upper end and that it registers with the opening I5 ofthe ridge-receiving plate I4. This element functions to alternately move into and out of engagement with` the carpet B to intermittently project a node of carpet` and binding vupwardly through said opening into needle penetrating position.

The rock arm 93 is relatively short and extends to a point below the hollow standard 8. An eccentric is fixed to the main shaft I'I, and a pitman link |02 is connected at its upper end with said eccentric and is pivotally connected at its lower end as at |03 with one end of a movement compounding lever |04 which is pivotally supported intermediately of its ends as at |05 on the arm 93. The other end of the lever |04 is forked as at |06 to receive a slide block |01 encircling an eccentric disk |08 secured upon the bearing shaft 88. It will be observed by reference to Figures 3, 5, 1'1 and 18 that the eccentric elements I0| and |08 have their axes of eccentricity diametrically-oppositely disposed with respect to the axis of the bearing shaft 88.

As the link |02 is vertically reciprocated in the frame standard 8 by the eccentric II, the lever |04 is caused to swing about the eccentric |08 and the arms 93 and 92 are caused to swing about the eccentric 98. The compounded leverage provided by these separate pivotal points and the interconnection at |05 of the lever |04 and the arm 93 serves to impart a wide range of upward-downward movement to the ridge forming element 81. This range of movement is sufcient to cause the element 81 to always clear or move out of contact with the carpet pile at the lower limit of travel of said element, and since the eccentric |0| is timed so that the element 81 is always clear of the carpet pile during feed movements of the carpet, Contact of the element with the moving pile and the consequent formation of a furrow in said pile is avoided.

In practice, it may be found desirable, when binding carpets of different thicknesses, to vary the depth of needle penetration in the base 6 of the carpet, and inasmuch as the needle I9 oscillates about a fixed axis, it follows that the node of carpet and binding which is formed by the upward movement of the ridge-forming element 13, must be either raised a greater or lesser distance with respect to the point of penetration of the needle. For this purpose, manually operable means are provided for angularly adjusting the eccentrics 90 and |08 whereby the upper limit of movement of the ridge forming element will be suitably raised or lowered. To this end, the frame standard 8 is provided in its front wall with an inclined opening forming a housing |09 having an exteriorly located upper end and an interiorly located lower end. The upper end of the housing is closed by a cap ||0 having an axial bore in which is rotatably mounted the upper end of a manually operable screw ||2, the cap being secured to the housing. The screw is provided intermediate its ends with a flange ||3 which is positioned between the under face of said cap I l0 and the upper end of the housing |09 to retain the screw against longitudinal movement with respect to said housing. The

Iupper end of the screw projects above the cap ||0 and secured thereon is a disk-shaped head ||4 having a knurled periphery and provided on its under face with a concentric line of teeth |55 engageable by a spring pin IIS mounted in the cap H0 for frictionally retaining the screw in any position of angular adjustment. Slidably mounted in the housing |09 is a nut I having threaded engagement with the lower end of the screw I2. The nut I1 is provided with a longitudinally extending key-way ||8 on its periphery for receiving a key IIB mounted on the housing |09 to thereby retain the nut against turning with the screw but permit longitudinal movement of the nut with respect to lsaid screw. A link |20 is pivotally connected at its upper end as at I2| to the lower end of said screw and has its lower/ end pivotally connected as at |22 to the eccentric on which the rocking frame sleeve 9| is fulcrumed. Thus, upon rotation of the screw ||2 in one direction, the bearing shaft 88 and the eccentrics 90 and |08 affixed thereto will be turned about the axis of the shaft 88 and the rocking frame sleeve 9| will be elevated and also swung about the eccentric 90, and consequently the ridge forming element 81 will be bodily raised whereby said element Will present the ridge of carpet and binding at a higher elevation with respect to the point of needle penetration and the needle will therefore make a deeper penetration in the carpet. It will also be apparent that when the screw is rotated in the opposite direction, the rockingfframe will be lowered and also rocked in the opposite direction and the element will be lowered so that the needle will make a relatively shallow penetration in the carpet. During these movements of adjustment, the degree of movement effected is accentuated by the compound leverage provided by the separate pivotal points about the eccentrics 90 and |08 and the interconnection at |05 of the lever |04 and the armr 93, and by this means the range of adjustment desired can be obtained by a lesser degree of rotation of the adjustment screw I I2 than would otherwise be necessary. i

I'he needle thread d is led from the supply to a stationary thread guide |23 on the stitching head F, thence between tension disks |24, |24

mounted on said head, thence through an eye in the looper 22, thence through a spring guide |25, thence through a stationary guide |26 on the head, thence through a guide eye on the take-up lever 23, and thence to the needle. The tension disks |24, |24 are freely mounted on the forward end of a horizontal bearing rod |21 which is mounted for longitudinal sliding movements in the stitching head F. A nut |28 is mounted on the rod |21 in front of said disks, and a nut |29 is mounted o n the rear projecting end of the rod in spaced relation to the stitching head. A coil spring |30 is disposed around the rod between the nut |29 and the head and functions to urge the rod rearwardly and thereby maintain the disks in yieldable contact.

It is desirable to provide means for releasing said tension automatically upon depression of the presser foot assembly structure so as to permit the operator when removing the work from the machine to pull the needle thread through the various guides. To this end, a cam arm I3|e is rigidly mounted on the left hand end of a rock shaft |3| which is journaled in the head F, the longitudinal axis of the shaft being disposed at right angles to the tension rod |21, and the cam arm ISI@L being located adjacent the rear end of said rod. A rock arm A|32 isiixed to the right han-d end of said rock shaft I3 I, and a coil spring |33 which is connected at its ends to the rock arm |32 and to the head F, functions to retain the cam arm |30 normally out of engagement with the rear end of the tension rod |21. A rock shaft |34 extends longitudinally within the overhanging arm 9 of the frame, the left hand end of the shaft having a bearing in the end wall of the frame arm and projecting outwardly therebeyond, and the right hand ena of the shaft having a bearing in a hanger |35 which is supported by said frame arm. Secured to the projecting' sion of the spring 35, the presser foot assembly 'l structure will be depressed, and the cam arm will be rocked against the tension of the spring |33 and will contact the rear end of the tension rod |21 and move said rod forwardly against the tension of the spring |36 to thereby 'l release the tension on the needle thread.

Supported on the frame base 1 and attached to the front wall thereof by screws |46, |46 is a work support or table |4i which extends to the left of the base and in front of the presser foot assembly structure, the upper surface of the table being in a plane slightly below the upper peripheral surfaces of the supporting rollers 32 and 4|.

Mounted on the table |4| is a carpet guiding and binding laying unit generally designated |42. This unit includes a mounting plate |43 which is triangular in shape and is equipped with an upstanding, transversely disposed supporting flange |44. The plate is pivotally secured to the table |4| as at |45 and has an arcuate slot therein for receiving a clamp screw |45 threadably mounted in a tap formed in said table. By swinging the plate about its pivot |45 the position of the mounting flange |44 can be altered with relation to the stitch forming mechanism. AA generally rectangular guide block |41 is supported by the ange |44 transversely of the line of feed and with its left hand end'in position for engaging and guiding movementof the carpet edge about which the binding is folded and to which said binding is to be affixed by a line of blind lock stitches. The swinging adjustment of the plate |43 just referred to serves to appropriately position the guide end of said block, and it will be noted that said guide end is curved about a longitudinal center as at |43 and has its advance edge rounded oii as at |49 so as to facilitate its carpet edge guiding function. See Figs. l, 2, 6, 10 and 11.

While the left hand or guide end of the block |41 is solid, the block is U-shaped in vertical cross section throughout the remainder of its length, and the front and rear walls of the block formed by this U-shaping are provided with opposed upstanding guide lugs |56. A pivot pin mounted in said walls and traverses the space between them and extends as at |52 as a pivot into the receiving aperture |53 in the opposing mounting ange |44. This flange also has a longitudinal slot therein to receive a clamp screw |54 threaded into a receiving bore in the block |41 and which serves to secure adjustments of elevation `of the guide end ofthe block about the pivotal support |52, |53.

Within the channel in the U-shaped block |41 l a mounting bar |55 is pivoted on the pin |5I.

The bar extends at each end beyond its pivotal mounting, and a compression spring |56 is interposed between the right hand end thereof and the underlying block surface and serves to yieldably hold the left hand end of the bar down in movement limiting contact with the block. A supplemental mounting plate |51 overlies the bar |55 between the guide lugs |55 vand extends a distance beyond the left hand end thereof. An ear |58 depends vertically from one side at the right hand end of the plate |51 and is pivoted on the cross pin |5|. A compression spring |59 interposed between the plate |51 and the bar |55 to the left of the pivotal mounting of said plate constantly tends to force the left hand end of the plate upwardly, and this upward movement of the plate is adjustably limited by a screw |60 threaded in a receiving bore into the bar |55 through a bifurcation |6| in the right hand end of the plate |51. A second mounting plate |62 .is mounted on and extends beyond the left hand end of the plate |51. The plate |62 is longitudinally slotted as at |63 and is adjustably secured by screws |64 so that the degree to which the left hand end thereof extends beyond the plate |51 can be altered at will, and this extended end is twisted into a plane intersecting the line of feed of the carpet at an angle approximating 45 and also inclined to the vertical in the rearwardupward direction. On this bent end a finely toothed binding stretching or spreading disk |65 is freely rotatably mounted.

The binding spreading disk 65 angularly overlies the binding A in the manner illustrated in Figure 6 of the drawings from which it will be observed that this disk is disposed to the right of the carpet base engaging front feed wheel and immediately in front of the ridgereceiving plate I4. Engagement of the angularly disposed and rearwardly tilted disk in rolling contact with the binding A serves to draw or spread the same firmly and flatly over the edge portion of the carpet base, and it will be observed by reference to Figure 10 of the drawings that the springs |56 and |59 permit the disk to yield upwardly or downwardly.

In order to lift the disk |65 out of contact with the binding each time the presser foot assembly structure is depressed by actuation of the kneepress, the rock shaft 29 is equipped with a rearwardly extended, horizontally disposed rock arm |66 from which a pin |61 projects in parallel relation to said shaft. Each time the shaft 23 is rocked to depress the rock arm 36, the rock arm |66 and pin |61 will be depressed, and since the pin is connected by a spring link |68 with the lug |66 extending from the right hand end of the bar |55 this downward movement of the pin will draw the right hand end of the bar and plate assembly |55, |51, |62 downwardly and lift the disk |65 clear of the binding A, The spring |68 forms a yieldable connecting link but it is to be understood that it is of sufficient strength to dominate the compression spring |56 and that its coils are normally closed as illustrated -in Figure 10.

In order to guard the operators hand from contacting the feed wheel 53 during the operation of the machine, I have ,provided a vertical guard plate |16 which is disposed immediately in front of said wheel and is supported on the bracket 46 by a screw I1 I.

In operation, the presser foot assembly structure is first depressed and the binding spreader disk |65 elevated by the knee-press lever 5| and the ridge edge portion of a carpet B together with the binding A which has been previously joined thereto by the first operation, is placed between the presser foot assembly structure roller 52 and the feed wheel 53 with the edge of the carpet and the binding against the guiding surface |48 of the block |41, the base 6 of the carpet being uppermost. VThe knee-press is then released and consequently the roller'32 'and the wheel 53 will clamp the carpet at a point to the left of the binding.

When the main shaft 1 is rotated by the usual power means, the feed wheel 53 will feed the carpet together with the binding rearwardly above the ridge forming element 81, and the latter will intermittently project a ridge of carpet and binding upwardly through the opening l in the plate I4 into needle penetrating position. During the feed travel of the carpet and binding, the member It will overlie the edge of the binding A and assist in guiding the binding of the carpet, and the disk |65 of the unit |42 which bears upon the binding will spread or force the binding to the left and thereby lay said binding tightly over the edge of the carpet. Simultaneously therewith, the feed wheel 53 which has been set at a slight angle to the direction of feed, engages the base 6 of the carpet and crowds the edge of the carpet into the binding. By providing a vertically yieldable support for the disk |65, said disk will cooperate with carpets of different thicknesses which may be fed through the binder.

The carpet is given its feeding movement while the ridge forming element is below and out of Contact with the pile of the carpet and consequently a furrow will not be formed in the carpet pile.

Immediately after the ridge of carpet and binding has been elevated by the ridge forming element 81, the needle i9 enters the binding and the base of the carpet, and the rotary hook 2i! and the loopers 2|, 22 cooperate with the needle to lay the needle thread d over the edge of the binding and to effect the concatenation of the needle thread with the bcbbin thread d.

When it is desired to remove the work from the machine, the knee-press 5| is operated to depress the presser foot assembly structure, to lift the disk |65 out of contact with the binding A, and to release the tension disks |24 whereby the operator may withdraw the work and simultaneously pull the needle thread d through the various thread guides.

When the presser foot assembly structure is depressed the supporting rollers 32, 4|, 4| move down simultaneously and the slidable engagement of the plate 41 on the supporting lug 3| permits the relative movement of the parts occasioned by the angular movement of the rock arms 30 and M.

As has been previously stated, the inclined plate 41 guides the infeeding edge of a carpet to the rollers 4| so as to properly move oversaid rollers and be received between one said roller 4| and the opposing feed wheel 8B. This roller and wheel equipment grips the bound edge of the carpet and draws it away from the positionof needle penetration whereas the roller and feed wheel equipment 32, 53 grips the carpet alone to the left of the binding A and feeds the same toward the position of needle penetration. As

the bound carpet edge portion is being fed away from the position of needle penetration, the ircner disk 85, engaging the same directly over the space s2 between the underlying supporting rollers ii and in the vertical plane in which the ridge forming element oscillates, irons out any semblance of a ridge which might tend to remain in said edge portion and assures against the appearance of an unsightly furrow in the pile side of the carpet.

While this disclosure stresses the attachment of the free edge of the binding A to the base 6 of the carpet B by an overedge blind lock stitch of the character disclosed in Figure 15, the invention is not to `be considered limited to employment of this particular stitch formation. In Figure 20, for example, the free edge of the'bind- Ving is shown attached to the carpet base by other than an overedge stitch. vBy eliminating the -loopers, 2|, 22v and their function of spreading the `needle thread d over the free edge of the binding, attachment of the free edge of the binding to the carpet base can,` be effected in the manner illustrated in Figure20. With the loop- -ers 2|, 22 removed, the stitch line formed by the needlethread d can be made to overlie the free edge of the binding in a straight line and the stitch line formed by the bobbin thread d' can be made to similarly overlie the carpet base beside the free edge of the binding, the concatenations of these threads taking place, blind stitch fashion, within the carpet base, as shown in dotted lines in Figure 20.

The terms presser foot,'presser foot structure, and presser foot assembly herein used andrelating to the rollers 32, 4| andthe members which support them, including the plate 41, are used because these elements perform the customary broad purpose of a presser foot, namely, that of opposing the intermittentfeed mechanism, in this instance the feed rollers. 53 and 85. In the present machine, however, the elements 32, 4| and 41 are disposed beneath the work being fed through the machine and are in the nature of work supporting or work clamping devices which hold the work against the feed rollers 53 and the plate I4.

It is of course to be understood thatthe details of structure and arrangement of parts 'may be variously changed and modified without departing from the spirit and scope of my invention.

I claim: 4

1. In a blind stitch sewing machine for binding carpets, the combination with a stationary horizontal plate having an opening, of a blind stitch forming mechanism operating above said plate and including a needle mounted for relciprocations acrosssaid opening and a rotary hook cooperating with said needle, means including a` rotatable drag element disposed` in front of the plate for drawing tight a binding aroundthe edge of the carpet, means located below the plate for projecting a ridge of carpet and binding upwardly through the opening. of said plate with the base of the carpet andthe edge of the binding in needle penetrating position, and means for intermittently feeding the carpet and binding past the stitch forming mechanism whereby the needle thread will be intermittently laid over the edge of the binding. 2. In a blind stitch sewing machine fork binding carpets, the combination with a stationary horizontal plate having an opening,` of a blind stitch forming mechanism operating above said plate and including a needle mounted for reciprocations across said'opening and arotary hook cooperating with said needle, means disposed in front of the plate for directing a bind-- ing around the edge of the carpet, the pile side ofy the carpet being disposed lowermost, means= located below the plate for projecting a ridgeof' carpet and binding upwardly through the openrfeed shaft on which the wheel is fixed, a ratchet for engaging the base of the carpet alongside of the binding, and 'avertically yieldable presser foot structure disposed below the feed for cooperation therewith.

3. In a blind stitch sewing machine for binding carpets, the combination with a stationary horizontal plate having an opening, of a blind stitch forming mechanism operating above said plate and including a needle mounted for reciprocations across said opening and a rotary hook cooperating with said needle, means disposed in front of the plate for directing a binding around the edge of the carpet, means located below the plate for projecting a ridge of carpet and binding upwardly through the opening of said plate with the base of the carpet and the edge of the binding in needle penetrating position, an intermittently rotatable feed disposed in front of the plate for engaging the base of the carpet alongside lof the binding, and a vertically yieldable presser foot structure disposed below the feed for cooperation therewith.

4. In a blind stitch sewing machine, the com.-

- bination with a main frameincluding an overand including a needle mounted for reciprocations across said opening, means for projecting a ridge of material upwardly through said opening into needle penetrating position, a top feed wheel rotatably mounted on the free end of said arm 'in cooperative relation to said stitch forming mechanism, and driving connections between said main shaft and said feed wheel for imparting intermittent rotations to said wheel in timed relation to the needle reciprocations.

5. In a blind stitch sewing machine, the `combination with a main frame including .an overhanging arm, of a main shaft journaled in said arm and extending longitudinally thereof, a stationary horizontal plate attached to the free end of said arm and provided with an opening, of a stitch forming mechanism mounted on said arm and including a needle mounted for reciprocations across said opening, means for projecting a ridge of material upwardly through said opening into needle penetrating position, a top feed wheel rotatably mounted on the free end of said arm in cooperative relation to said stitch forming mechanism, and driving connections between said main shaft andsaid feed wheel for imparting yintermittent rotations to said wheel in timed relation to the needle reciprocations, connections including .a horizontal wheel fixed on said feed shaft, a feed lever fulcrumed on said feed shaft and having operative engagement with said ratchet wheel, an eccentric on the main shaft, and a link connecting the feed lever and the eccentric.

6. In a blind stitch sewing machine, the com bination with a main frame including an overhanging arm, of a main shaft journaled in said arm and extending longitudinally thereof, a stationary horizontal plate attached to the free end oi' seid provided with an opening, of a stitch forming mechanism mounted on said arm and including a needle mounted for reciprocations across said opening, means for projecting a 4ridge of material upwardly through said open- -wheel located in cooperative relation to thestitch forming mechanism, means for supporting the feed wheel on said frame arm at an inclination to the general direction of feed, and driving co'nnections between said main shaft and said feed wheel for imparting intermittent rotations to said wheel in timed relation to the needle reciprocations.

'7. In a blind stitch sewing machine, the combination with a stationary horizontal plate having an opening, of a stitch forming mechanism located above the plate and including a needle mounted for reciprocations across said opening, a ridgeforming element located below the plate for projecting a ridge of fabric upwardly through said opening into needle penetrating position, a rotary feed wheel located in front of said stitch forming mechanism, a presser foot structure separate from the plate and disposed below the feed wheel for cooperation therewith, and means for intermittently rotating the feed wheel in timed relation to the needle reciprocations.

8. In a blind stitch sewing machine, the combination with a stationary horizontal plate having an opening, of a stitch forming mechanism located above the plate and including a needle mounted for reciprocations across said opening, a vertically reciprocatory ridge forming element located below the plate for projecting a ridge of fabric upwardly through said opening into needle penetrating position, a rotary feed wheel located in front of said stitch forming mecha- 9. In a blind stitch sewing machine, the com-I bination with a stationary horizontal plate having an opening, of a stitch forming mechanism located above the plate and including a needle mounted for reciprocations across said opening, a ridge forming element located below the plate for projecting a ridge of fabric upwardly through said opening into needle penetrating position, a rotary feed wheel located in front of said stitch forming mechanism, a presser foot structure separate from the plate and disposed below the feed wheel for cooperation therewith, means for intermittently rotating the feed wheel in timed relation to the needle reciprocations, means for yieldably urging the presser foot structure upwardly toward said feed wheel, and means for adjustably limiting the upward movement of said presser foot structiue.

10. In a combined sewing and binding machine, the combination with a stitch forming mechanism including a reciprocatory needle, of a rotary feed disposed in cooperative relation to the needle for feeding a body fabric to the needle, a fabric guiding and binding laying unit disposed in front of said needle and at the right of said rotary feed for receiving the edge of the body fabric, a freely rotatable disk mounted on said unit at an angle to the general direction of feed of the body fabric for forcing the bind- Aing toward the feed, and means for supporting the feed at an inclination to the general direction of feed for crowding the body fabric toward said unit.

l1. In a combined sewing and binding machine,

the combination with a stitch forming mechanism including a reciprocatory needle, 4offa rotary feed disposed in cooperative relation to the needle for feeding a body fabric tol the needle, a fabric guiding and bindinglaying unitfdisposed in front of said needleand at the right of said rotary feed for receiving the edge of the body fabric, a freely rotatable disk mounted on said unit at an angle to the general direction of feed of the body fabric for forcing the binding toward the feed, and means for supporting the feed at an inclination to the general direction of feed for crowding the body fabric into the binder, said feed supporting means being adjust: able to vary the inclination of the feed.`

12. In a blind stitch sewing machine, the combination with a main frame including a base, a standard, and an arm extending laterally from the standard and overhangin'gthe base, of a stationary horizontal -plate attached to the free end of the overhanging arm and provided with an opening, a stitch forming mechanism supported on the arm and including a needle mounted for reciprocations across said opening, a rotary feed wheel mounted on the arm in front'of said plate, a vertically yieldable presser foot structure supported on the base and disposed Ybelow saidfeed wheel, a ridge forming element supported on-thev base and disposed below the opening of said plate for projecting a ridge of` material upwardly through said opening into needle penetrating position, and means for rotating the feed wheel'in timed relation to the needle reciprocations.

13. In a blind stitch sewing machine, the combination with a main frame including a base, a standard, and an arm extending laterally from the standard and overhanging the base, of a stationary horizontal plate attached to the free end of the overhanging arm and provided with an opening, a stitch forming mechanism supported on the arm and including a needle mounted for reciprocations across saidopening, a rotary feed wheel mounted on the arm in front of said plate', a vertically yieldable presser foot structure sup'- ported on the base and disposed below said feed wheel, a ridge forming element supported on the base and disposed below the opening of said plate for -projecting a ridge of material upwardly through said opening into needle penetrating position, means for rotating the feed wheel in timed relation to the needle reciprocations, and a fabric guiding and binding laying unit disposed in front of said plate and at one side of the feed wheel and presser foot. v

14. In a blind stitch sewing machine, the combination with a frame including a laterally eX- tending arm, of a stitching head depending from the free end of said arm, a main shaft extending longitudinally of and journaled within said arm, one end of the shaft projecting beyond the stitching head, a horizontal plate attached to the lower end of the stitching head and provided with a ridge receiving opening, a stitch forming lmechanism supported on said head and including a needle mounted for reciprocations across said opening, a rotary feed wheel located' in cooperative relation to said needle, a horizontal feed shaft journaled on said head, and driving connections between the projecting end of the main shaft and the feed shaft and located exteriorly of the head for imparting intermittent bindstitch forming mechanism operatingV above the plate and including a needle mounted forreciprocations across said opening, a fabric guiding l and binding laying unit disposed infront of said plate, a ridge forming element located. below the plate for projecting va ridge of the carpet and the upper edge ofthe binding upwardly through the plate openirf'g into needle penetrating position, a feed cooperating with one face of the carpet ata point alongside of the binding andin frontof the plate, and a vertically yieldable presser foot structure disposed opposite the feed for cooperation with the other vface of the carpet.

16. In a blind stitch sewing machine for bind ing carpets, the combination with a stationary horizontal platejhaving an opening, of a blind stitch forming mechanism operating above said plate and `including a needle mounted for reciprocations across said opening and a rotary hook cooperating with said needle, a fabric guiding and binding laying unit disposed in front of theplate, means located below the plate vfor projecting a ridge of carpet and bindingupwardly through the opening of said plate with thek base of the carpet and the edge of the binding in needle penetrating position, a top feed disposed in front of the plate for engaging the baser of the carpet alongside of the binding, a vertically yieldable presser foot structure disposed below the feed for cooperation therewith, a normally active needle thread tensioning means, and means for depressing said presser foot structure and simultaneously releasing said tensioning means.

17. A ridge forming mechanism for blind stitch sewing machines comprising a rocking frame fulcrurned to swing about a horizontal axis, .a ridge forming element rigidly connected thereto, means for rocking said frame, and means for altering the degree of rocking movement imparted to said frame ,to thereby vary the height to which said element projects a ridge.

18. A ridge forming mechanism for blind stitch sewing machines comprising a rocking frame fulcrumed to swing about a horizontal axis, an upwardly projecting ridge forming finger rigidly connected thereto, means for rocking said frame, and means for altering the degree of rocking movement imparted to said frame to thereby vary the height to which said element projects a ridge.

19. A ridge forming .mechanism for blind stitch sewing machines comprising a horizontal shaft, an eccentric mounted on said Shaft for angular adjustments, a rocking frame fulcrumed .on said eccentric, a ridge forming element operatively connected to said frame for bodily movements therewith, means for rocking said frame, and means for angularly adjusting the eccentric to raise or lower said rocking frame and thereby vary the height to whichV said element projects a ridge.

20. In a blind stitch sewing machine, the combination with a main frame including a base, `a

standard, and an arm extending laterally from the standard and overhanging the base, of a stationary horizontal plate attached to the free end of the overhanging arm and provided with an opening, a stitch forming mechanism supported on the arm and including a needle mounted for reciprocations across said opening, a rocking frame fulcrumed on the base to swing about a horizontal axis and having an end portion .projecting below said plate, a ridge -forrningele ment rigidly connected to the projecting end of said rocking frame for projecting a ridge of fabric upwardly through the opening of the plate into needle penetrating position, means for rocking said frame, and means for altering the degree of rocking movement imparted to said frame to thereby vary the height to which said element projects a ridge.

21. In a blind stitch sewing machine, the ccmbination with a main frame including a base, a standard, and an arm extending laterally from the standard and overhanging the base, of a stationary horizontal plate attached to the free end of the overhanging arm and provided with an opening, a stitch forming mechanism supported v vframe for bodily movements therewith and located below the opening of the plate for projecting a ridge of fabric upwardly therethrough into needle penetrating position, means for rocking said frame, and manually operable means mounted on the main frame `for angularly adjusting the eccentric to raise or lower said rocking frame.

22. In a blind stitch sewing machine, the combination with a main frame including a base, a standard, and an arm extending laterally from the standard and overhanging the base, of a stationary horizontal plate attached to the free end of the overhanging arm and provided with an opening, a stitch forming mechanism supported on the arm and includinga needle mounted for reciprocations across said opening, a horizontal shaft mounted in said base, an eccentric mounted on said shaft for angular adjustments, a rocking frame fulcrumed on said eccentric, a ridge forming element operatively connected to said frame for bodily movements therewith and located below the opening of the plate for projecting a ridge of fabric upwardly therethrough into needle penetrating position, means for rocking said frame, and manually operable means mounted on'the main frame for angularly adjusting the eccentric to raise or lower said rocking frame, said manually operable means in- #I cluding a manually rotatable element mounted on the standard and a link connection between said rotatable element and said eccentric.

23. In a blind stitch sewing machine for binding carpets, the combination with a stationaryl horizontal plate having an opening, of a blind stitch forming mechanism operating above said plate and including a needle mounted for reciprocations across said opening and a rotary hook cooperating with said needle, means disposed in front of the plate for directing a binding around the edge of the carpet, means located below the plate for projecting a ridge of carpet and binding upwardly through the opening of said plate with the base of the carpet and the edge of the binding in needle penetrating position, an intermittently rotatable feed disposed in front of the plate for engaging the base of the carpet alongside of the binding, and a freely rotatable carpet supporting roller disposed 'below and yieldably opposed to 'said feed for cooperation therewith.

24. In a blind stitch sewing machine for binding carpets, the combination with a stationary horizontal plate having an opening, of a blind Cil,

stitch forming mechanism operating above said plate and including aneedle mounted for reciprocations across said opening and a rotary hook cooperating with said needle, means disposed in frontof the plate for directing a binding around the edge of the carpet, means located belowV the plate for projecting a ridge of carpet and binding upwardly through the opening of said plate with the base of the carpet and the edge of the binding in needle penetrating position, an intermittently rotatable feed wheel disposed in front of the plate opening for engaging the base of the carpet alongside of thebinding, an intermittently rotatable feedvwheelv disposed in rear of the Plate opening for engagingthe bound edge portion of the carpet, and a vertically yieldable presser foot assembly structure disposed below said feed wheels for cooperation therewith.

25. In a blind stitch sewing machine for binding carpets, the combination with a stationary horizontall plate having an opening, of a blind stitch forming mechanism operating above said plate and including a needle mounted for reciprocations across said opening and a rotary hook cooperating with said needle, means disposed in front of the plate for directing a binding around the edge of the -carpet,means located below the plate for projecting a ridge of carpet and binding upwardly through the opening of said plate with the base of the carpet and the edge of the binding in needle penetrating position, an intermittently rotatable feed wheel disposed in front of the plate opening for engaging the base of the carpet alongside of the binding, an intermittently rotatable feed wheel disposed in rear of the plate opening for engaging the bound edge portion of the carpet, and a vertically yieldable presser foot assembly structure disposed below said feed wheels for cooperation therewith and including two freely rotatable carpet supporting rollers directly opposed to said feed wheels.

26. In a blind stitch sewing machine for binding carpets, the combination with a stationary horizontal plate having an opening, of a blind stitch-forming mechanism operating above said plate and including a needle mounted for reciprocations across said opening and a rotary hook cooperating with said needle, means disposed in front of the plate for directing a bind-y ing' around the edge of the carpet, means located below the plate for projecting a ridge of carpet and binding upwardly through the opening of said plate with the base of the carpet and the edge of the binding in needle penetrating position, an intermittently rotatable feed wheel disposed in frontA of the plate opening for engaging the base of the carpet alongside of the binding, an intermittently rotatable feed wheel disposed in rear of the plate opening for engaging the bound edge portion of the carpet, a presser foot assembly disposed below said feed wheels and including two freely rotatable carpet supporting rollers directly opposed to said feed wheels and a carpet edge supporting and directing plate between said freely rotatable rollers and inclined upwardlyrearwardly toward the rearmost one thereof.

27. In a blind stitch sewing machine for binding carpets, the combination with a stationary horizontal plate having an opening, of a blind stitch forming mechanism operating above said plate and including a needle mounted for reciprocations across said opening and a rotary hook co- 4 operating with said needle, means including an cated below the plate for projecting a ridge of carpet and binding upwardly through the opening of said plate with the base of the carpet and the edge of the binding in needle penetrating position, top feed means effective to feed the carpet and -crowd it against the edge guide and into the binding, and supporting means underlying the carpet as it is bein-g fed.

28. In a blind stitch sewing machine, the combination with a main frame including an overhanging arm, of a main shaft journaled in said arm and extending longitudinally thereof, a stationary horizontal plate attached to the free end of said arm and provided with an opening, a stitch forming mechanism mounted on said arm and including a needle mounted for reciprocations across said opening, means for projecting a ridge of material upwardly through said opening into needle penetrating position, two top feed wheels rotatably mounted on the free end of said arm one in front and one in rear of said stitch forming mechanism, and driving connections between said main shaft and each of said feed wheels for imparting intermittent rotations to said wheels in timed relation to the needle reciprocations.

29. In a blind stitch sewing machine, the combination with a main frame including an overhanging arm, of a main shaft journaled in said arm and extending longitudinally thereof, a sta-I tionary horizontal plate attached to the free end of said arm and provided with an opening, a stitch forming mechanism mounted on said arm and including a needle mounted for reciprocations across said opening, means for projecting a ridge of material upwardly through said opening into needle penetrating position, two top feed wheels rotatably mounted on the free end of said arm one in front and one in rear of said stitch forming mechanism, and a set of driving connections between said main shaft and each of said feed wheels for imparting intermittent rotations to said wheels in timed relation to the needle reciprocations, each said set of driving connections including a horizontal feed shaft on which' the wheel is fixed, a ratchet wheel fixed on said feed shaft, a feed lever fulcrumed on said feed shaft and having operative engagement with said ratchet wheel, an eccentric on the main shaft,

and a link connecting the feed lever and the n eccentric.

30. In a blind stitch sewing machine, the combination with a main frame including an overhanging arm, of a main shaft journaled in said arm and extending longitudinally thereof, a stationary horizontal plate attached to the free end of said arm and provided with an opening, of a stitch forming mechanism mounted on said arm and including a needle mounted for reciprocations across said opening, means for projecting a ridge of material upwardly through said opening into needle penetrating position, a top feed wheel located in cooperative relation to the stitch forming mechanism, a fabric edge guiding meansdisposed to one side of said opening, means for supporting the feed wheel on said frame arm at an inclination to the general direction of feed for imparting feed movements to a fabric and for simultaneouslycrowding it against said guide means, and driving connections between said main shaft and said feed wheel for imparting' intermittent rotations to said wheel in timed relation to the needle reciprocations.

31. In a blind stitch sewing machine, the combination with a stationary horizontal plate having an opening, of a stitch forming mechanism located above the plate and including a needle mounted for reciprocations across said opening, a ridge forming element located below the plate for projecting a ridge of fabric upwardly through said opening into needle penetrating position, a rotary feed wheel located in front of said stitch forming mechanism, a rotary feed wheel located in rear of said stitch forming mechanism, means for intermittently rotating said feed wheels in timed relation to the needle reciprocations, a presser foot assembly structure separate from and disposed below the plate means for yieldably urging `the presser foot assembly structure upwardly toward the plate, and means for adjustably limiting' the upward movement of the presser foot assembly structure, said assembly structure including two freely rotatable rollers onedirectly opposed to each feed wheel.

32. In a blind stitch sewing machine, the combination with a stationary horizontal plate having'an opening, of a'stitch forming mechanism located above the platev and including a needle mounted for reciprocations across said opening, a ridge forming element located below the plate for projecting a ridge of fabric upwardly through said opening into needle penetrating position, a rotary feed wheel located in front of said stitch forming mechanism, a rotary feed wheel located in rear of said stitch forming mechanism, means for intermittently rotating said feed wheels in timed relation to the needle reciprocations, a presser foot assembly structure separate from and disposed below the plate, means for yieldably urging the presser foot assembly structure upwardly toward the plate, and means for adjustably limiting the upward movement of the presser foot assembly structure, said assembly structure including two freely rotatable rollers one directly opposed to each feed'wheel, and a carpet edge supporting and directing plate between said freely rotatable rollers and inclined upwardly-rearwardly toward the rearmost one thereof.

33. In a blind stitch sewing machine, the combination with a stationary horizontal plate having an opening, of a stitch forming mechanism located above the plate and including a needle mounted for reciprocations across said opening, a ridge forming element located below the plate for projecting a ridge of fabric upwardly through said opening into needle penetrating position, a rotary feed wheel located in front of said stitch forming mechanism, a rotary feed wheel located in rear of said stitch forming mechanism. means for intermittently rotating said feed wheels in timed relation to the needle reciprocations, a presser foot assembly structure separate from and disposed below the plate, means for yieldably urging the presser foot assembly structure upwardly toward the plate, and means for adjustably limiting the upward movement of the presser foot assembly structure, said assembly structure including two freely rotatable rollers one di-` rectly opposed to each feed wheel, a rock arm supporting each freely rotatable roller, and a carpet edge supporting plate extending between the freely rotatable rollers and pivotally mounted at one end on one of the rock arms adjacent the roller thereon, the other rock arm having means for slidably supporting the other end of said pivoted plate.

34. In a combined sewing and binding machine, the combination with a'stitch forming mechanism including a reciprocatory needle, o1' a rotary, feed disposed in cooperative relation to the needle for feeding a body fabric to the needle, a fabric guiding and binding laying unit disposed in front of said needle and at the right of said rotary feed for receiving the edge of the body fabric, a freely rotatable disk mounted on said unit at an angle to the general direction of feed of the body fabric for forcing the binding toward the feed, means for supporting the feed at an inclination to the general direction of feed for crowding the body toward said unit, and a second rotary feed disposed in rear of the needle for engagement with the sewed binding and operable in unison with the first mentioned feed.

35. In a combined sewing and binding machine, the combination with a stitch forming mechanism including a reciprocatory needle, of a rotary feed disposed in cooperative relation to the needle for feeding a body fabric to the needle, a fabric guiding and binding laying unit disposed in front of said needle and at the right of said rotary feed for receiving the edge of the body fabric, a freely rotatable disk mounted on said unit at an angle to the general direction of feed of the body fabric for forcing the binding toward the feed, means for supporting the feed at an inclination to the general direction of feed for crowding the body toward said unit, a second rotary feed disposed in rear of the needle for engagement with the sewed binding and operable in unison with the first mentioned feed, and a fabric supporting roller underlying and directly opposed to each said rotary feed.

36. In a combined sewing and binding machine, the combination with a stitch forming4 mechanism including a reciprocatory needle, of a rotary feed disposed in cooperative relation to the needle for feeding a body fabric to the needle, a fabric guiding and binding laying unit disposed in front of said needle and at the right of said rotary feed for receiving the edge of the body fabric, a freely rotatable disk` mounted on said unit at an angle to the general direction of feed of the body fabric for forcing the binding toward the feed, means for supporting the feed at an'inclination to the general direction of feed for crowding the body toward said unit, a second rotary feed disposed in rear of the needle for engagement with the sewed binding and operable in unison with the first mentioned feed, a fabric supporting roller underlying and directly opposed to each said rotary feed, means yieldably urging the supporting rollers toward the rotary feeds, and means for moving the supporting rollers away from the rotary feeds for facilitating insertion of work into and withdrawal of Work from the machine.

37. In a combined sewing and binding machine, the combination with a stitch forming mechanism including a reciprocatory needle, of a rotary feed disposed in cooperative rel-ation to the needle for feeding a body fabric to the needle, a fabric guiding and binding laying unit disposed in front of said needle and at the right of said rotary feed for receiving the edge of the body fabric, a freely rotatable disk mounted on said unit at an angle to the general direction of feed of the body fabric for forcing the binding toward the feed, means for supporting the feed at an inclination to the general direction of feed for crowding the body toward said unit, a second rotary feed disposed in rear of the needle for engagement with the sewed binding and operable in unison with the rst mentioned feed, a fabric supporting roller underlying and directly opposed to each said rotary feed, means yieldably urging the supporting rollers toward the rotary feeds, and means for raising the disk and for simultaneously moving the supporting rollers away from the rotary feeds for facilitating insertion of work into and withdrawal of work from the machine.

38. In a combined sewing and binding machine, the combination with a stitch forming mechanism including a reciprocatory needle, of a rotary feed disposed in cooperative relation to the needle for feeding a body fabric to the needle, a fabric guiding and binding laying unitdisposed in front of said needle and at the right of said rotary feed for receiving the edge of the body fabric, a freely rotatable disk mounted on said unitat an angle to the general direction of feed of the body fabric and at an inclination to the Vertical in an upward-rearward direction for forcing the binding toward the feed, and means for supporting the feed at an inclination to the general direction of feed for crowding the body fabric toward said unit.

39. In a blind stitch sewing machine, the combination with a frame including a laterally extending arm, of a stitching head depending from the free end of said arm, a main shaft extending longitudinally of and journaled within said arm, a horizontalplate attached to the lower end of the stitching head and provided with a ridge receiving opening, a stitch forming mechanism supported on said head and including a needle mounted for reciprocations across said opening, a rotary feed wheel located in advance of the needle and at one side of the stitching line, a second rotary feed wheel located in rear of the needle and at the opposite side of the stitching line, and independent driving connections between the main shaft and each said feed wheel for imparting *intermittent rotations thereto, said driving connections being located eXteriorly of said head.l

I 40. In ablind stitch sewing machine, the combination with a stationary horizontal plate having an opening, of astitch forming mechanism located above the plate and including a'needle mounted for reciprocations across said opening, a ridge forming element located below the plate for projecting a ridge of fabric upwardly through said opening into needle penetrating position, fabric supporting means, fabric feeding means, and ridge depressing means disposed in rear of the ridge forming element and effective to iron out impressions made in fabrics by said element.

41. In a blind stitch sewing machine, the combination with a'stationary horizontal plate having an opening, of a stitch forming mechanism located above the plate and including a needle mounted for reciprocations across said opening, a ridge forming element located below the plate for projecting a ridge of fabric upwardly through said opening into needle penetrating position, fabric supporting means, fabric feeding means, ridge depressing means disposed in rear of the ridge forming element and effective to iron out impressions made in fabrics by said element, and fabric supporting means underlying said depressing means and presenting a space of limited width into which fabrics are depressed by said depressing means.

42. In a blind stitch sewing machine, the combination with a stationary horizontal plate having an opening, of a stitch forming mechanism located above the plate and including a needle mounted for reciprocations across said opening, a A

ridge forming element located below the plate for projecting a ridge of fabric upwardly through said opening into needle penetrating position, fabric supporting means, fabric feeding means, ridge depressing means disposed in rear of the ridge forming element and effective to iron out impressions made in fabrics by said element, and a pair of laterally spaced freely rotatable supporting rollers underlying said depressing means and between which fabrics are depressed by said depressing means.

43. In a blind stitch sewing machine, the combination with a stationary horizontal plate having an opening, of a stitch forming mechanism located above the plate and including a needle mounted for reciprocations across said opening, a ridge forming element located below the plate for projecting a ridge of fabric upwardly through said opening into needle penetrating position,

fabric supporting means, fabric feeding means, E

a rotary ridge depressing disk disposed in rear of the ridge forming element and effective to iron out impressions made in fabrics by said element, and a pair of laterally spaced freely rotatable supporting rollers underlying saidl depressing disk and between which fabrics are depressed by said depressing disk.

44. In a blind stitch sewing machine, the combination with a stationary horizontal plate having an opening, of a stitch forming mechanism located above the plate and including a needle mounted for reciprocations across said opening, a ridge forming element located below the plate for projecting a ridge of fabric upwardly through said opening into needle penetrating position, a rotary feed wheel located in front of said stitch forming mechanism, a second rotary feed wheel located in rear of the stitch forming mechanism, fabric supporting means opposing said feed wheels, and a ridge depressing disk rotatable with said second feed wheel and effective to iron out impressions made in fabrics by said element.

45. In a blind stitch sewing machine, the combination with a stationary horizontal plate having an opening, of a stitch forming mechanism located above the plate and including a needle y mounted for reciprocations across said opening, a ridge forming element located below the plate for projecting a ridge of fabric upwardly throughv said opening into needle penetrating position, a rotary feed wheel located in front of said stitch forming mechanism, a second rotary feed wheel located in rear of the stitch forming mechanism, fabric supporting means opposing said feed wheels, and a ridge depressing disk rotatable with said second feed wheel and effective to iron out impressions made in fabrics by said element, said fabric supporting means including a pair of -laterally spaced freely rotatable rollers underlying said disk and between which fabrics are depressed by said disk.

46. A ridge forming mechanism for blind stitch sewing machines comprising a horizontal shaft, an eccentric mounted on said shaft for angular adjustments, a rocking frame fulcrumed on said eccentric, a ridge forming element operatively connected to said frame for bodily movements therewith, means for rocking said frame, and means for angularly adjusting the eccentric and including movement compounding devices effective for simultaneously moving said rocking frame about its fulcrum on the eccentric for rapidlyY raising or lowering said ridge forming element,

47. A ridge forming mechanism for blind stitch sewing machines comprising a horizontal shaft,

an eccentric mounted on said shaft for angular means for angularly adjusting the eccentric. to

raise or lower said rocking frame, and means for simultaneously moving said rocking frame about its fulcrum on the eccentric and in the direction in which the adjustmentl is being effected so as to compound the movement and increase the rapidity of adjustment of the position of the ridge forming element.

48. In a blind stitch sewing machine, a fulcrum member, a rocking frame rockable about said member and including long and short arm extensions, a ridge forming element carried by Athe long arm, and actuating means for said element including an actuator lever, a fixed fulcrum member for one end of said lever, a reciprocable thrust link -connected with the other end of said lever, and means pivotally connecting said short arm and said lever adjacent said thrust link.

49. In a blind stitch sewing machine, a fulcrum member, a rocking frame rockable about said member and including long and short arm extensions, a ridge forming element carried by the long arm, and actuating means `for said element including an actuator lever, a fixed fulcrum member for one end of said lever, a reciprocable thrust link connected with the other end of said lever, and means pivotally connecting said short directions and simultaneously effect a lifting or lowering of the rocking frame and a movement of said frame about itsfulcrum in like direction for rapidly raising or lowering said ridge forming element.

50. In a blind stitch sewing machine, the combination witl a main frame including a base, a standard, and an arm extending laterally from the standard and overhanging the base, of a stationary horizontal plate attached to the free end of the overhanging arm and provided with an opening, a stitch forming mechanism supported on the arm and including a needle mounted for reciprocations across said opening, a fulcrum member mounted in said base, a rocking frame rockable about said member and including long and short arm extensions, a ridge forming element carried by the long arm and located below the opening of the plate for projecting a ridge of fabric upwardly through said opening into needle penetrating position, and actuating means for said element including an actuator lever, a fixed fulcrum member for one end of said lever, a reciprocable thrust link connected with the other end of said lever, and means pivotally connecting said short arm and said lever adjacent said thrust link, each said fulcrum member comprising an eccentric, said eccentrics being fixed upon a common shaft adjustable about its axis and being positioned with their centers of eccentricity diametrically oppositely disposed with respect to the axis of said shaft, and manually -operable means for adjusting the shaft about its the rocking frame and a movement of said frame v 

